Geological map of Akarui Point and Naga-iwa Rock, Antarctic Geological Map Series, Sheet 20.

Geological map data of Antarctica held by the National Institute of Polar Research and the Geospatial Information Authority of Japan. There are two types of data available: (data1: geometrically corrected data) and (data2: raw image data).日本国立极地研究所（National Institute of Polar Research）与日本国土地理院（Geospatial Information Authority of Japan）所持有之南极地质图数据，现有两类可供使用的数据：（数据1：经几何校正的数据）与（数据2：原始图像数据）。